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/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ART_COMPILER_UTILS_X86_64_CONSTANTS_X86_64_H_
#define ART_COMPILER_UTILS_X86_64_CONSTANTS_X86_64_H_
#include <iosfwd>
#include <android-base/logging.h>
#include "arch/x86_64/registers_x86_64.h"
#include "base/macros.h"
#include "globals.h"
namespace art {
namespace x86_64 {
class CpuRegister {
public:
explicit constexpr CpuRegister(Register r) : reg_(r) {}
explicit constexpr CpuRegister(int r) : reg_(Register(r)) {}
constexpr Register AsRegister() const {
return reg_;
}
constexpr uint8_t LowBits() const {
return reg_ & 7;
}
constexpr bool NeedsRex() const {
return reg_ > 7;
}
private:
const Register reg_;
};
std::ostream& operator<<(std::ostream& os, const CpuRegister& reg);
class XmmRegister {
public:
explicit constexpr XmmRegister(FloatRegister r) : reg_(r) {}
explicit constexpr XmmRegister(int r) : reg_(FloatRegister(r)) {}
constexpr FloatRegister AsFloatRegister() const {
return reg_;
}
constexpr uint8_t LowBits() const {
return reg_ & 7;
}
constexpr bool NeedsRex() const {
return reg_ > 7;
}
private:
const FloatRegister reg_;
};
std::ostream& operator<<(std::ostream& os, const XmmRegister& reg);
enum X87Register {
ST0 = 0,
ST1 = 1,
ST2 = 2,
ST3 = 3,
ST4 = 4,
ST5 = 5,
ST6 = 6,
ST7 = 7,
kNumberOfX87Registers = 8,
kNoX87Register = -1 // Signals an illegal register.
};
std::ostream& operator<<(std::ostream& os, const X87Register& reg);
enum ScaleFactor {
TIMES_1 = 0,
TIMES_2 = 1,
TIMES_4 = 2,
TIMES_8 = 3
};
enum Condition {
kOverflow = 0,
kNoOverflow = 1,
kBelow = 2,
kAboveEqual = 3,
kEqual = 4,
kNotEqual = 5,
kBelowEqual = 6,
kAbove = 7,
kSign = 8,
kNotSign = 9,
kParityEven = 10,
kParityOdd = 11,
kLess = 12,
kGreaterEqual = 13,
kLessEqual = 14,
kGreater = 15,
kZero = kEqual,
kNotZero = kNotEqual,
kNegative = kSign,
kPositive = kNotSign,
kCarrySet = kBelow,
kCarryClear = kAboveEqual,
kUnordered = kParityEven
};
class Instr {
public:
static const uint8_t kHltInstruction = 0xF4;
// We prefer not to use the int3 instruction since it conflicts with gdb.
static const uint8_t kBreakPointInstruction = kHltInstruction;
bool IsBreakPoint() {
return (*reinterpret_cast<const uint8_t*>(this)) == kBreakPointInstruction;
}
// Instructions are read out of a code stream. The only way to get a
// reference to an instruction is to convert a pointer. There is no way
// to allocate or create instances of class Instr.
// Use the At(pc) function to create references to Instr.
static Instr* At(uintptr_t pc) { return reinterpret_cast<Instr*>(pc); }
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(Instr);
};
} // namespace x86_64
} // namespace art
#endif // ART_COMPILER_UTILS_X86_64_CONSTANTS_X86_64_H_
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